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니켈크롬강과 ZrO2 접합체의 접합강도에 미치는 ZrO2 안정화제의 영향
유연철,이용철,장병록 대한금속재료학회(대한금속학회) 1990 대한금속·재료학회지 Vol.28 No.10
Effects of ZrO₂ stabilizers such as 3㏖% Y₂O₃, 8㏖% Y₂O₃, and 9㏖% MgO on the joining phenomena of Ni-Cr steel/Al/ZrO₂ joints have been examined by the concept of solid state diffusion bonding. Irrespective of stahilizers used, the Al/ZrO₂ joint whose reaction layer could not be detected showed a good contact while the reaction layer of the Ni-Cr steel/Al was the diffusion layer of Al and Fe. The joint shear strength of this system did not show any distinct differences even though ZrO₂ stabilizers are varying. The maximun shear strength was 27 ㎫ under a pressure of 100 ㎫, temperature of 635℃, and the time of 120min. The residual stress resulting from the thermal expansion mismatch between ZrO₂ and A1 was different depending on the A1 layer depth sites. It was shown that compressive residual stress could be found at the Al/ZrO₂ interface while tensile residual stress at the NI-Cr steel/Al interface.
루푸스 신염 환자에서 발생한 폐 Nocardia 감염증
장선주 ( Sun Joo Chang ),이강녕 ( Kang Nyoung Lee ),성윤경 ( Yoon Kyoung Sung ),이혜순 ( Hye Soon Lee ),엄완식 ( Wan Sik Uhm ),김태환 ( Tae Hwan Kim ),전재범 ( Jae Bum Jun ),배현주 ( Hyun Joo Pai ),배상철 ( Sang Cheol Bae ),전석철 대한류마티스학회 2005 대한류마티스학회지 Vol.12 No.1
Nocardiosis is uncommon in healthy people, but occurs as an opportunistic infection in patients with connective tissue disease, solid organ transplantation, lung disease, malignancies, and the acquired immune deficiency syndrome (AIDS). Nocardia is a gram positive, variably acid-fast aerobic bacterium of the family Nocardiaceae characterized by branching and filamentous growth, with distinctive aerial hyphae. In systemic lupus erythematosus (SLE) patients, immunosuppressiion with cytotoxic drugs or corticosteroids, proteinuria, renal insufficiency, and active SLE itself are known as risk factors for serious bacterial infections and opportunistic infections. We report a case of pulmonary Nocardiosis in patient with lupus nephritis treated with cyclophosphamide and high dose corticosteroid.
일부(一部) 도시(都市) 영세지역(零細地域)의 보건실태(保健實態)
장임원,정규철,Chang, Im-Won,Chung, Kyou-Chull 대한예방의학회 1977 Journal of Preventive Medicine and Public Health Vol.10 No.1
In order to find out health problems among inhabitants in slum areas in Kwanak-Ku, Seoul, a series of health survey was conducted upon 510 households by interview from March to December, 1976. The results obtained were as follows: 1. Employments of householders were unstable; Out of 508 householders, 164(32.3%) were unemployed and 184 (36.2%) were daily or temporary employees. 2. Average number of households per house was 2.0 and average area of residential room per person was $4.0m^2$. 3. 476(93.3%) out of 510 households were supplied with tap water and rest of them made use of ground water as a source of drinking water. 4. Only 279(18.3%) out of 1527 live births were delivered at medical facilities, 496(32.7%) were at home attended by doctors or midwives and 358(25.1%) took prenatal care. The above findings were worse in urban slum area than in other urban area of relatively high economic level, but were better than in rural area of less medical facilities. 5. Initiation of treatment were delayed until their illnesses were advanced in most of the households, 472(92.5%) out 510. In the early stage of the illness, 131(25.6%) of the house-holds sought physicians in their clinics or general hospitals and 250 (40.9%) visited chemists, to toy drugs at first hand. Frequency of visits to physician increased to 52.8% as the disease aggravated in later stages. 6. Cost of medical expenditure per household amounted to 815 won, and was paid to, in the order of chemists, physicians, chinese herb stores, chinese herb doctors. 7. Concerning the health knowledge of the inhabitants, 273(53.9%) out of 506 respondents were aware of the infectivity of pulmonary tuberculosis, and 68(13.4%) of them checked regularly their chest findings by X-ray at least once every two years. 8. As for the family planning, although 448(87.3%) out of 510 respondents were in favor of it, 215 (41.8%) of them were actually practicing contraception. 9. About 40.6% (125 respondents) of them obtained information and knowledge concerning contraception through personal contact with family planning workers. 10. Nutritional status of housewives was generally poor: 49(38.3%) out of 128 housewives were found to be anemic and average serum protein level was $7.5{\pm}0.82g/dl$.
장여진,양태준,신정철,김혜화,김태광,정미영,김재홍 대한침구의학회 2016 대한침구의학회지 Vol.33 No.1
Objectives : The aim of this report was to investigate the effects of Korean medical treatment on facial nerve paralysis with sensorineural hearing loss and tinnitus caused by traumatic temporal bone fracture. Methods : We treated a patient with acupuncture, herbal medicine and physiotherapy. The effect of these treatments was evaluated by House-Brackmann facial grading scale, Yanagihara’s unweighted grading system and by Digital Infrared Thermographic Image. Results : After 21 days of Korean medical treatment, House-Brackmann facial grading scale changed from III to II and Yanagihara’s unweighted grading score increased from 14 to 27. Digital Infrared Thermographic Image also improved. Conclusions : These results suggest that Korean medical treatments were effective in treating facial nerve paralysis with sensorineural hearing loss and tinnitus caused by traumatic temporal bone fracture. We hope that a more efficient application of this treatment will be the result of clinical data accumulated in future studies.
환자 대조군 연구를 통한 입원치료가 구안와사에 미치는 영향
서정철,손인석,조태성,권혜연,윤현민,장경전,송춘호,안창범 대한침구학회 2002 대한침구의학회지 Vol.19 No.2
Objective : The aim of this study was to assess the effects of admission care on Bell's palsy by case control study. Method : 27 patients who diagnosed as Bell's palsy were shared 13 inpatients group treated by early admission care, and 14 outpatients group. They were equally treated with acupuncture, herb medicine and western medicine. The groups were evaluated by Yanagihara,s unweighted grading system at pre-treatment, after 5 days, after 10 days and after 15 days. Results : The Yanagihara,s scores of 2 groups showed stastically significant improvement in comparison with pre-treatment. In improvement index after treatment, the Yanagihara,s scores of 2 groups increased but were not stastically significant the difference. Conclusion : These results provided that the admission care may not be a valuable treatment for Bell's palsy. Further study is needed to evaluate the effect of early admission care on Bell's palsy.
장정범,송영철,박상순,이상근,이화미 한국구조물진단유지관리공학회 2003 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.7 No.1
The diagnosis and rehabilitation design of a underground box structure which was seriously damaged by a natural disaster were performed in this study. The diagnosis for the damaged underground box structure includes the leveling survey, non-destructive tests and structural and soil analysis. On the basis of the diagnosis results, the structural integrity of the damaged underground box structure was evaluated and the optimal rehabilitation countermeasures were proposed. As a result, it was noticed that the structures constructed in a place where can be affected by any natural disaster has to enough consider surrounding environment at initial design stage.